某矿山酸性水调节库重力坝流固耦合分析

摘要

根据某矿山酸性水调节库安全稳定运行的需要，建立调节库重力坝有限元分析模型，运用间接流固耦合分析方法，首先分析了重力坝在洪水水位的最危险状态下，加入相关坝体排水系统进入有限元分析，重力坝坝体和坝基的渗流状态和酸性水渗透量；然后将渗流计算耦合到应力变形中，分析了整个坝体的应力状态和变形行为，详细分析了斜缝（施工缝）附近的应力集中状态。结果表明：排水设施加入后，有效降低了坝体的浸润线位置，减少了渗水对坝体的不利影响，耦合作用下，重力坝各项指标符合相关要求。斜缝对坝体变形影响有限，但改变了坝体的应力分布情况，需要在斜缝位置加强保护。%According to the requirements of safe and stable operation of the acidic water regulating reservoir of a mine,the finite element analysis model of the gravity dam of the regulating reservoir is es-tablished.The fluid-structure interaction analysis method is adopted to analyze the seepage state and a-cidic water osmotic quantity of the gravity dam with the dangerous water level.Based on the above analy-sis results,the seepage calculation method is coupled to analyze the stress state and deformation behavior of the whole gravity dam,besides that,the stress concentration state near the inclined seam(construction seam)is also analyzed in depth.The results show that the addition of drainage facilities reduce the gravity dame saturation line position and the negative impact of water seepage to gravity dam body effectively,the indicators of gravity meet the relevant requirements by coupling,the impact of incline seam to gravity dam body is limited,but it changed the stress distribution of gravity dam body,therefore,it is necessary to take related measures to strengthen protection in the position of inclined seam.